Knockdown back rest



E; A. ANDERS-ON Dec. 9, 1947.

KNOCKDOWN BACK REST v Filed May 21, 1945 X Inuentar E40 r zdego'vr' 1 Jr 37 9 95 By -mas Patented Dec. 9, 1947 UNITED STATES PATENT OFFICE2,432,366 KNOCKDOWN BACK REST Emery A. Anderson, Norman, Okla.

Application May 21, 1945, Serial No. 594,921

2 Claims. 1

This invention relates to a back rest for attachment to a bedstead andhas for an object to provide such a device which may be quickly knockeddown and collapsed into a small space for transporting in a satchel orother case.

Another object of the invention is to provide a knock-down back restwhich may be very quickly set up for use.

A further object of the invention is to provide a back rest, the membersof which are secured in operative position by a slip or fabric backsupporting case.

A still further object of the invention is to provide an extremelysimple yet efiective and comfortable back support formed of fewseparable and inexpensive parts for use of readers, invalids, or otherswho may lounge rather than lie flat upon a bed.

Other features and advantages will become more readily apparent from thefollowing description and the accompanying illustrative drawings inwhich:

Figure 1 is a perspective view of my invention, shown in operativeposition.

Figure 2 is a perspective detail view of one member of my device,

Figure 3 is a perspective View of certain members of the device showndisassembled, and

Figure 4 is a vertical sectional view of Figure 2.

In the above enumerated drawings and in the following description of myback rest the same reference characters in each indicate the same partswherever used and in which l0, indicates my knock-down back rest set upand in position for use upon a bedstead I I; This invention consists ofa pair of upright bars 12 and I3, adapted to be held spaced apart by around it, the ends 55 and it, of which are provided with reduced dowelpins I! and I8, which in turnare adapted to frictionally seat in boresl9 and 2G, in the facing sides 2| and 22, of said bars. While the dowelsfit tightly into said bores, yet they are easily removable.

The bars l2 and it, are also provided each with opposing spaced apartsmaller bores 23 and 22, and. 23 and 2d, respectively, adjacent theirlower ends through all of which latter bores a cord 25, is threaded fora purpose which will presently be stated.

I also provide a slip-on casing 26, formed of any suitable fabric orother material for the purpose and which is flexible but not elastic,the purpose of which is to slip over the upper ends 2'! and 28, of thebars l2 and E3, and extend down to about the round It. This slip formsthe double function of a back support and means for preventing thespreading apart of said upper end 21 and 28, of the bars when the deviceis assembled.

Below the bores 19 and 29, there is provided in each of said barssemi-cylindrical grooves 29 and 30, in the outer faces 3i and 32, of thebars which grooves are adapted to engage a rail 33, of a bedstead l I.The lower terminals 34 and 35, of the bars I2 and 13, are cut on theirinner faces 36 and 31, as indicated clearly in Figure 3, of the drawingsto engage the end rail 38, of the bedstead, the shoulders 39 and 49,formed by said cut-outs providing stops to prevent slipping down of thedevice.

The elements of the invention having now been set forth in detail, Iwill briefly state the mannor of its use. First, the dowels I! and I8,are placed in the bores 19 and 20, of the bars l2 and i3, then the case28, is slipped on over the upper ends of the said bars, after which thecord 25, (which may at all times remain threaded through its bores) isdrawn as tight as possible and its ends 42 and 43, tied. The device isset up for use and may be attached to the bed as indicated. As this backsupport is practically flat and requires very little space it may remainset up, except for transportation purposes and when space is to beconsidered in which case the knot 44, is untied, the round It, removedand placed parallel with the bars, the case being used to wrap saidmembers closely together and the cord used to tie the members in theknocked-down and collapsed condition. The corners i5, 46, 41 and 48, ofthe bars 52 and iii, are preferably chamfered in order to obviatecutting edges.

It is thought that persons skilled in the art to which the inventionrelates will be able to obtain a clear understanding of the inventionafter considering the description in connection with the drawings.Therefore, a more lengthy description is regarded as unnecessary.

Minor changes in shape, size and rearrangement of details and parts suchas come within the purview of the invention claimed may be resorted to,in actual practice, if desired.

Having now described my invention, that which I claim as new and desireto procure by Letters Patent is:

1. In combination with a bed having a pair of vertically spacedhorizontally disposed rails, a knock-down back-rest therefor including apair of spaced vertically arranged frame members provided with alignedapertures formed transyerseiy through their central portions and havingtheir lower ends notched to provide transversely aligned supportingshoulders engaging one of said rails, a round having reduced endsreceived in the aligned apertures, and providing shoulders engaging thesides of said frame members and forming fulcrums therefor, a flexibleslip-on casing on the upper ends of said frame members, a draw cablesecured to the lower ends of said frame members below said round fordrawing in on said lower ends to cause the upper ends thereof to moveoutwardly to hold said slip-on casing in fixed position thereon, andtransversely aligned bearing grooves in the rear edges of said framemembers engaging the other of said rails for supporting the back-rest inoperative position upon the bed.

2. In combination with a bed having a pair of vertically spacedhorizontally disposed rails, a knock-down back-rest therefor including apair of spaced vertically arranged frame members provided with alignedapertures formed transversely through their central portions, a roundhaving reduced ends received in the aligned apertures, and rovidingshoulders engaging the sides of said frame members and forming fulcrumstherefor, a flexible slip-on casing on the upper ends of said framemembers, a, draw cable secured to the lower ends of said frame membersbelow said round for drawing in on said lower ends to cause the upperends thereof to move outwardly to hold said slip-on casing in fixedposition thereon, transversely aligned bearing grooves in the rear edgesof said frame members below said aligned apertures engaging one of saidrails, and cut-out shoulders formed at the front of the lower ends ofsaid frame members engaging the other of said rails, whereby saidback-rest will be supported in operative position upon the bed.

EMERY A. ANDERSON.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 815,190 Marchessault Mar. 13,1906 1,422,915 Benson et al July 18, 1922 1,312,774 Barrett Aug. 12,1919 470,255 Petrie Mar. 8, 1892 1,219,437 Butler Mar. 20, 19172,107,880 Wilsdorf Feb. 8, 1938 1,539,082 Fyler May 26, 1925 820,125Pennington May 8, 1906 1,156,125 Ahlborn Oct. 12, 1915 787,068 BisphamApr. 11, 1905 2,137,312 Thompson Nov. 22, 1938 1,484,981 Brenninger Feb,26, 1924

